Hi there! I've been using Notion SLE for Miroslav for a few months now and I'm very pleased with how simple it is and how friendly it is to my keyboard-retarded hands (I love that I can manually type in velocities!).

I'm having a huge issue with the Horn sounds, though; I just can't seem to figure out how I trigger their FF sounds (default sample: FR HORN FF LP BC1).

It's really been bugging me for weeks and I've finally given up trying to find an answer myself.

You can open the rules files for Miroslav in a text editor and tweak them so that the sample you want to play occurs all the time and not just on sforzandos. Check out the rules creation instructions (I believe in the Notion downloads section).